You want to set a good example for your child. If you try and tell your kid to eat healthy and not to eat junk food while you're sitting there eating a bag of chips and drinking a soda, they're not likely to listen. But if you eat healthy, your child will want to mimic you and eat healthy as well. Many people love a good sandwich. That is fine unless they put mayonnaise on it. All mayonnaise contains is fat that will hinder the weight loss process. Try using mustard instead. Mustard packs a lot of flavor and has zero calories in it. You will still love your sandwich and it won't contain so many calories.